Centrifugal compressor.



W. KIESBR. FENTRIPUGAL COMPRESSOR.

APPLIOATION FILED JUNE 6, 1911.

Patented Feb. 17, 1914.

Inventor; leer Kieser;

I a specication.

To all 'wliom it may concern.'

lUNI'JLED STATES PATENT o'iuaicn.

WALTER' messa, or cHA-RLo'rTENBUaG, GERMANY, assreNoa 'ro GENERAL ELE'cumc Y COMPANY, A CORPORATION orlNnW Yoan.

-Be it known that I, WALTER KrnsER,I a citizen of Switzerland, residing at Charlottenburg, Germany, have invented certain new and useful Im rovements in Centrifugal Compressorsz o which the following is Thisinvention vrelates to centrifugal compressors andthe object 'of the invention is the provision of lmproved means for circulating'l the cooling water used in such compressors to cool the air or other gases being operated upon by the removal ofthe heat of compression.

In the drawing illustrating one of the embodiments of the invention, Figure 1 is a partial cross section of a compressor taken on the line 1-1 of Fig. 2; Fig. 2 is a partial side view of a, compressor with a portion in section; and-Fig 3 is a dia rammatic view 4showing the circulation of t e-cooling Water. i

y The compressor illustrated is a .multistage compressor having a shaft 4 upon which the impellers 5 of the several stages are mounted,=the shaft being driven by any suit-I able motorT 'Ihe impellers are separated Ifrom each other by diaphragms 6 securedy in the casing 7. The casing is made in halves to facilitate the assembhng of the machine,4

and the diaphragms 6 may also be made in Passages' or conduits 8 convey the air through the diaphragms from the discharge of one impeller to the inlet of thenext impeller. -During the iowV through the'passages 8, the air isfcooled by water circulated over` the outerr walls of said pas-V sages by a pum or other means. Each diaphragm has -in 1t a water chamber or cham- 'b'ers 9 of general semi-annular form located between 'they inner walls of the U-shaped 7 bend inthe assage 8 which receives the air discharged om one impeller and turns its direction through substantially 180 to lead it toward the inlet ofthe next impeller.

Each diaphragm` 6.A also contains another water .chamber that is subdivided into compartments 10, and the water 'in this last mentioned chamber acts upon-,adjacent walls 10al `the chamber 9ffof the next adjacent diaphragm to the right. At least one of the cooling chambers which adjoin the directing Specication of Letters Patent.

rat-cama Feb-.17, 1914.

Application inea June s, 1911. serial-No. 631,591.

passagesy 8 is subdivided, and the .subdivi- .sions are arranged either wholly or partially 1n series relation as to the ilow of water by means of the cooling-chambers provided on .the other side of the directing passages.

Each chamber or compartment 10 occupies a quarter of a diaphragm', being bounded by the radially disposed walls l1]'. extending from Athe inner wall 12 of the chamber to the casing. Other radiali arranged Walls or partitions 13 extend om the wall l2 to within a short distance of the casin a space 14 being provided between "the en s ofthe walls and the casing through which the water flows. Alternating with the partitions 13 and the end walls 11 are other-radial partitions 15 which terminate a short distance from the wall-12 so as to leave a space 16 through which vthe water flows. In

this manner a `zigzag or ltortuous channel.

for the water comprising a plurality 'of sections or passes is provided which leads from oneend of the chamber or compartment 10 to the other, The chambers') and compartments 10 in each diaphragm .6 are connected by (passages 17 formed in the members or gui e -vanes l18 that extend across the pas-y sages 8 and as shown serve as guide varies for the air, one of said passages 17 connecting each section ofthe zigzag path or channel with the chamber 9.v

The diaphragme are arranged in series `relation as to the vgeneral How. of the cooling water. Water is supplied to the righthand'compartment 10 in a given diaphragm, say, (see Fig. 1) by pipes 19 and iiows through the zigzag channel over one-quarter of the diaphragm. At the same time, the water Hows from the chambers or compartments 10 through the passages 17 arranged at intervals alon the tortuous channel and' enters the cham er 9 which extends over one-half of the diaphragm. The course of the water is then from one'end of the chamber 9 toward the other and through the passages 17 at the left of said dia hragm` 6 in Fig. l into the zigzag channel eading from the middle 'of the upper half of 'the diaphra'gm tof the pipe 20 whichpconveys Water to the next"` diaphragm or from the last diaphragm to some sultable receptacle that vreceives the vdischarge from the compressor.

If desired, the chambers 9 and 10 can be extended overdiii'erent arcs fromthose illus` trated. For example, the chamber 10 might 110 25 that the invention canv be carried out by in said diaphragm which are separated from l it by the air passages in the diaphragm,

. and the temperature of' the opposite chambers is kept approximately the same, there-` by improvin the action of the compressor. If any clogging in the connecting passages occurs, it can be readily detected fromthe decrease of the discharge.`

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the'I apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and

other means. y

What I claim as new and desire to secure by Letters Patent of the United States, is,-

1. In a centrifugal compressor, the combinationof rotary impellers, diaphragme between the impellers having passages that direct the air or gas from one impeller to another, cooling water chambers in the diaphragme that are arranged on opposite sides of the passages, at least 'one of said cham-- bers being subdivided into compartments and guide vanes in said passages, there being passages through the guide vanes grouped in parallel relation to each other as to iiow and connectingthe compartments of one chamber through the other chamber so that cooling water` flowsV through the compartments 1n series relation.

2. In a centrifugal compressor, the combination of rotary impellers, diaphragms between the impellers having passages that direct the air orl gas from -one impeller to another, guide yvanes'extending across the passages, and cooling water chambersin the diaphragms that are arranged on opposite sides of the passages, at least one of-the chambers being subdivided into compartments, there being passages in the vanes and backl to anot arranged in parallel relation as to iow that connect the` chambers so that cooling water flows from a compartment of one chain-y ber to' and through the opposite chamber er compartment, of the hrst chamber.

3. In a centrifugal compressonhthe combitween the impellers having passages that direct the air from one impeller to another,

guide vanes arranged in the passages, and

ragms becooling water chambers in the diaphragme that are arranged onoppositesides of the passages, one of said chambers being subdivided into compartments that extend over a given arc while the opposite chamber has compartments extending over substantially twice that arc, there being assages through a plurality of said vanes t at are arranged in parallel relation as to flow for conveying water from one of the smaller compartments into a larger compartment, and other passages through a plurality of'y the vanes also arranged in parallel relation as to flow for conveying water fromv said larger com partment to one of the smaller compartments that is arranged next to the first smaller compartment.

' 4. In a centrifugal compressor, the combination of rotaryy impellers, diaphragms I-between the impellers having passages' that 85 direct the air from one impeller to another,

guide vanes inthe passages, cooling water\ chambers in the 4diaphragms on one side of the, passages, means for directing the water in a tortuous path through saidchambers over the walls of the passages, and cooling water chambersy on thev opposite side of the passages, there being passages'extend ing through the vanes that connect the first and second chambers, said vanek passages being arranged in other asto ow. v

5. In a centrifugal compressor, the combination of rotary impellers, diaphragms between thel impellers having passages that direct the air from-one'impeller to another, v

v guide vanes arranged in said passages, cool' ing water chambers in the' diaphragme on one side 'of the passages, interlapping partitions extending from opposite sides of the chambers-*part way across said chambers to direct the water. 1n azigzag path through the chambers, and coolin water chambers on the opposlte side of t e passages, there being passages through the guide vanes r grouped in parallel relation to each other that connect the first andv second chambers in series relation as to flow.

6.. In a centrifugal compressor, the combination of a casing, rotary impellers therein,vdiaphragms between the impellers having passages that direct the air from one impeller to another, there being-guide vanes in\the passages and a cooling water chamber in each diaphragm that is arranged on 12a Aone slde of the passage therein and is subdivided into a plurality of adjoining com'- partments, there being partitions 1n the compartments thatI direct the cooling water in ,a A zigzag path 'through said compart- 125 ments, and t erepbeing a cooling 'waterl chamber in the diaphra that is arranged on the opposite side of t e passage from the chamber aforesaid, there beingpassages through the vanes that connect each comian parallel relation to leach L partment with said chamber so that the water flows rst to one compartment, then to the chamber, and from the chamber to the next compartment, each time through a plurality of said vane passages in parallel.

7. In a centrifugal compressor, the .combination of rotary impellers, diaphragms between the impellers having passages that direct the air from one impeller to another, a cooling water chamber arranged on one side of the passage in a diaphragm that is subdivided into' a plurality of adjoining compartments, partitions in the compartments that direct thecool'ing water through a compartment in a zigzag channel comprising a plurality of sections, a cooling water chamber in the diaphragm that is arranged on the opposite side of the passage from the chamber aforesaid, and means that extends across the air passage aforesaid and connects said chamber with each section of the zigzag channel in such compartment and with the adjacent compartment so that the water enteringone compartment flows through a. portion of saidl means to the chamber and from said chamber through another portion of said means into the next compartment.

8. In a centrifugal compressor, the combination of a casing, rotary impellers, dia- `phragms mounted in the casing between the impellers and having passagesthat direct the air from one impeller to another, said diaphragme being made in sections, a plurality of cooling water vchambers or compartments in a given section that are arranged on one side of the passage, partitions in each chamber that direct the water through the ch amber in a zigzag path comprising a plurality of sections, a single cooling water chamber in said diaphragm section that is arranged on the opposite side of the passage, conduits extending across the passage that connect each section of the zigzag path with said single chamber, means supplying water to the irst of said plurality of chambers, and means conveying water from the last of said chambers, so that the water flows through a` plurality of said conduits in parallel 'between said single chamber and each of the rst mentioned chambers.

9. In a centrifugal compressor, the combination of a casing for the compressor that has a cylindrical interior, rotary'impellers, diaphragme having passages that direct the air from one impeller to another, said diaphragms being mounted in the casing between the impellers and made in halves, there being two coolingwater chambers vor compartments in each half diaphragm that are arranged on one side of the passage, radial partitions in the chambers that direct the water in a zigzag channel'comprising a plurality of sections from one end of each chamber to theother, a single cooling water chamber in said'half diaphragm that is arranged on the opposite side of the passage, conduits extending across the passage and forming a connection between each section of the zigzag channels and said chamber, a conduit supplying water to one of said two chambers, and a conduit 4for conveying water from the other chamberfso that the water flows through a plurality of said conduits in parallel between said single chamber and each of the first mentioned` chambers.

10. In a centrifugal compressor, the combination of rotary impellers, diaphragms between .the impellers having passages that direct the air from one impeller to another, a cooling water chamber in the diaphragm that is arranged on one side of the passage and is sub-divided into a plurality of separate compartments by radially extending walls, partitions in the compartments that direct the cooling water from one end thereof to the other in a zigzag channel whose sections are radially disposed and connected adjacent to their inner and outer ends, a cooling water chamberA in the diaphragm that is arranged on the opposite side of the' passage, and guide vanes that extend across l the passage, there being passages through the guide vanes that connect the zigzag channel with said second chamber so that water from one compartment Hows through vane passages arranged in parallel to the chamber and from said' chamber through other vane passages arranged in parallel into the next compartment.

11. In a centrifugal compressor, the combination of a casing, rotary impellers arranged within the casing, diaphragme that extend across the casing between the impellers and have passages for conveying air from one impeller to another, cooling water chambers in the diaphragms that are arranged on opposite sides of the passages, and guide vanes in the passages, there being passages through the vanes that extend between the oppositely disposed chambers, said vane passages being arranged in parallel relation with respect to the flow through them.

In Witness whereof, I have hereunto set my hand.

WALTER KIESER. Witnesses:

BERNHARD RUBNow, HERMANN HILLE. 

